Eventide ARGUS 5000 - Page 150

the pixel location drawing, the Argus is logically 256 pixels wide and 512 pixels high,
but the physical dimensions of the screen are 2 units wide to 3 units high. Therefore,
drawing from, say, coordinates 1,1 to 100,100 will NOT result in a negative 45-degree
angle. It is your responsibility to take this into account when drawing geometric
shapes.
Lines (and arcs) are, by default, drawn as unpatterned lines and with all pixels in the
line turned on. This may be undesirable because the line will be invisible when crossing
an already-filled area. You can elect to have the line perform one of various boolean
operations when crossing a given pixel. If, for example, you select "XOR", a lighted
pixel crossing another lighted pixel would turn that pixel OFF, thus drawing the line
visibly across a block-illuminated area. The default mode is "OR":
<ESO[70m Set the drawing mode to "OR".
<ESO[72m Set the drawing mode to "XOR".
You can create lines with any desired pixel pattern using an escape sequence. The
pattern is 32 bits long and will repeat every 32 bits. The least significant bit is drawn
, , starting at the current cursor position. Here is an example of how to create a pattern:
1: Desired: Dash-dot-dot-dash.
2: Convert to binary pattern: Dash= 1111, Dot= 11, space= 00
3: Convert to long word (32 bits): 11110011001100111100110011001111
4: Convert to decimal: 80258255
5: Issue command CHR$(27)&"[80258255b"
Note: In this example, the pattern will not be smooth, because it ends and begins with
a dash, so the next repetition will also begin with a dash, giving a double-length dash
between repetitions.
<ESO[PPPPPPPPb Set the current drawing pattern to the longword "PPPPPPPP".
The value is the decimal representation of the binary pattern.
^ As with an unpatterned line, you can select boolean operations to be performed on a
pixel-by-pixel basis. The default is "PATTERN MOVE."
July 1999 Argus 5000/7000 Ver. 5.xx Reference Manual Part#141003 145